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The Influence of Strategic Patenting on Companies' Patent Portfolios

  • Blind, Knut
  • Cremers, Katrin
  • Mueller, Elisabeth

This paper analyses whether strategic motives for patenting influence the characteristics of companies' patent portfolios. We use the number of citations and oppositions to represent these characteristics. The investigation is based on survey and patent data from German companies. We find clear evidence that the companies' patenting strategies explain the characteristics of their patent portfolios. First, companies using patents to protect their technological knowledge base receive a higher number of citations for their patents. Second, the motive of offensive – but not of defensive – blocking is related to a higher incidence of oppositions, whereas companies using patents as bartering chips in collaborations receive fewer oppositions to their patents.

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Paper provided by ZEW - Zentrum für Europäische Wirtschaftsforschung / Center for European Economic Research in its series ZEW Discussion Papers with number 07-013.

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Date of creation: 2007
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Handle: RePEc:zbw:zewdip:5501
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  1. Bruno Van Pottelsberghe & Eleftherios Sapsalis, 2007. "The institutional sources of knowledge and the value of academic patents," ULB Institutional Repository 2013/6195, ULB -- Universite Libre de Bruxelles.
  2. Noel, Michael D. & Schankerman, Mark, 2006. "Strategic Patenting and Software Innovation," CEPR Discussion Papers 5701, C.E.P.R. Discussion Papers.
  3. Cohen, Wesley M. & Goto, Akira & Nagata, Akiya & Nelson, Richard R. & Walsh, John P., 2002. "R&D spillovers, patents and the incentives to innovate in Japan and the United States," Research Policy, Elsevier, vol. 31(8-9), pages 1349-1367, December.
  4. Hussinger, Katrin, 2005. "Is Silence Golden? Patents versus Secrecy at the Firm Level," Discussion Paper Series of SFB/TR 15 Governance and the Efficiency of Economic Systems 37, Free University of Berlin, Humboldt University of Berlin, University of Bonn, University of Mannheim, University of Munich.
  5. Harhoff, Dietmar & Scherer, Frederic M. & Vopel, Katrin, 2003. "Citations, family size, opposition and the value of patent rights," Research Policy, Elsevier, vol. 32(8), pages 1343-1363, September.
  6. Wesley David Sine & Scott Shane & Dante Di Gregorio, 2003. "The Halo Effect and Technology Licensing: The Influence of Institutional Prestige on the Licensing of University Inventions," Management Science, INFORMS, vol. 49(4), pages 478-496, April.
  7. Kortum, Samuel & Lerner, Josh, 1999. "What is behind the recent surge in patenting?1," Research Policy, Elsevier, vol. 28(1), pages 1-22, January.
  8. Michael Noel & Mark Schankerman, 2006. "Strategic Patenting and Software Innovation," STICERD - Economics of Industry Papers 43, Suntory and Toyota International Centres for Economics and Related Disciplines, LSE.
  9. Harhoff, Dietmar & Reitzig, Markus, 2002. "Determinants of Opposition Against EPO Patent Grants - The Case of Biotechnology and Pharmaceuticals," CEPR Discussion Papers 3645, C.E.P.R. Discussion Papers.
  10. Hall, Bronwyn H & Ziedonis, Rosemarie Ham, 2001. "The Patent Paradox Revisited: An Empirical Study of Patenting in the U.S. Semiconductor Industry, 1979-1995," RAND Journal of Economics, The RAND Corporation, vol. 32(1), pages 101-28, Spring.
  11. Jaffe, Adam B., 2000. "The U.S. patent system in transition: policy innovation and the innovation process," Research Policy, Elsevier, vol. 29(4-5), pages 531-557, April.
  12. Bronwyn H. Hall & Grid Thoma & Salvatore Torrisi, 2006. "The market value of patents and R&D: Evidence from European firms," KITeS Working Papers 186, KITeS, Centre for Knowledge, Internationalization and Technology Studies, Universita' Bocconi, Milano, Italy, revised Nov 2006.
  13. Varian,Hal R. & Farrell,Joseph & Shapiro,Carl, 2004. "The Economics of Information Technology," Cambridge Books, Cambridge University Press, number 9780521844154, November.
  14. Graham, Stuart J. H. & Hall, Bronwyn H. & Harhoff, Dietmar & Mowery, David C., 2002. "Post-Issue Patent "Quality Control": A Comparative Study of US Patent Re-Examinations and European Patent Oppositions," Department of Economics, Working Paper Series qt2qt097bd, Department of Economics, Institute for Business and Economic Research, UC Berkeley.
  15. Carine Peeters & Bruno Pottelsberghe de la Potterie, 2006. "Innovation strategy and the patenting behavior of firms," Journal of Evolutionary Economics, Springer, vol. 16(1), pages 109-135, April.
  16. Mark Schankerman & Ariel Pakes, 1985. "Estimates of the Value of Patent Rights in European Countries During thePost-1950 Period," NBER Working Papers 1650, National Bureau of Economic Research, Inc.
  17. Ove Granstrand, 1999. "The Economics and Management of Intellectual Property," Books, Edward Elgar Publishing, number 1651, March.
  18. Michael Noel & Mark Schankerman, 2006. "Strategic patenting and software innovation," LSE Research Online Documents on Economics 3727, London School of Economics and Political Science, LSE Library.
  19. Michael Noel & Mark Schankerman, 2006. "Strategic patenting and software innovation," LSE Research Online Documents on Economics 4653, London School of Economics and Political Science, LSE Library.
  20. Wesley M Cohen & Richard R Nelson & John P Walsh, 2003. "Protecting Their Intellectual Assets: Appropriability Conditions and Why U.S. Manufacturing Firms Patent (Or Not)," Levine's Working Paper Archive 618897000000000624, David K. Levine.
  21. Shapiro, Carl, 2001. "Antitrust Limits to Patent Settlements," Competition Policy Center, Working Paper Series qt87s5j911, Competition Policy Center, Institute for Business and Economic Research, UC Berkeley.
  22. Jean O. Lanjouw & Mark Schankerman, 2004. "Patent Quality and Research Productivity: Measuring Innovation with Multiple Indicators," Economic Journal, Royal Economic Society, vol. 114(495), pages 441-465, 04.
  23. Michael Noel & Mark Schankerman, 2006. "Strategic Patenting and Software Innovation," CEP Discussion Papers dp0740, Centre for Economic Performance, LSE.
  24. Manuel Trajtenberg, 1990. "A Penny for Your Quotes: Patent Citations and the Value of Innovations," RAND Journal of Economics, The RAND Corporation, vol. 21(1), pages 172-187, Spring.
  25. Bronwyn H. Hall & Adam Jaffe & Manuel Trajtenberg, 2005. "Market Value and Patent Citations," RAND Journal of Economics, The RAND Corporation, vol. 36(1), pages 16-38, Spring.
  26. Carine Peeters & Bruno Van Pottelsberghe, 2006. "Complex innovation strategies and patenting behaviour," ULB Institutional Repository 2013/9051, ULB -- Universite Libre de Bruxelles.
  27. Dietmar Harhoff & Francis Narin & F. M. Scherer & Katrin Vopel, 1999. "Citation Frequency And The Value Of Patented Inventions," The Review of Economics and Statistics, MIT Press, vol. 81(3), pages 511-515, August.
  28. Arundel, Anthony, 2001. "The relative effectiveness of patents and secrecy for appropriation," Research Policy, Elsevier, vol. 30(4), pages 611-624, April.
  29. Blind, Knut & Edler, Jakob & Frietsch, Rainer & Schmoch, Ulrich, 2006. "Motives to patent: Empirical evidence from Germany," Research Policy, Elsevier, vol. 35(5), pages 655-672, June.
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